Active optics is a technology used with reflecting telescopes developed in the 1980s, which actively shapes a telescope`s mirrors to prevent deformation due to external influences such as wind, temperature, mechanical stress. Without active optics, the construction of 8 metre class telescopes is not possible, nor would telescopes with segmented m....
Found on
http://en.wikipedia.org/wiki/Active_optics
Technology developed in the 80s for reflecting telescopes. The construction enables telescopes to move 8 meter primary mirrors. As the name suggests, it works by `actively` adjusting the telescope mirrors.
Found on
http://planetfacts.org/space-terms/
A computer-controlled system that compensates for the distortion of a telescope's mirrors caused by gravity, and thus allows a thinner mirror and a lighter support structure to be used. It works by monitoring the image of a guide star and sending appropriate signals to actuators behind the mirror, w...
Found on
http://www.daviddarling.info/encyclopedia/A/active_optics.html
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